Daily generation scheduling: Quest for new models

This paper presents the need for adding transmission system representation in a conventional scheduling model. Given the complexity of developing solution algorithms for such models, the present study critically examines whether adding complexities to the simplified models viz, unit commitment and network now models, is worthwhile, or the simplified models provide good approximation of the optimal generation schedule. Prototype model development and simple case studies for a capacity constrained test system shows there are major deviations in the generation schedules, load-shed requirement and spot prices obtained from the simple models and the complex model. The results indicate that research efforts towards algorithmic development for more accurate scheduling models are needed.